testing minimal program

[rpikern] / src / serial.c

diff --git a/src/serial.c b/src/serial.c
index ddd5923..465afc7 100644 (file)
--- a/src/serial.c
+++ b/src/serial.c
@@ -14,13 +14,16 @@ void init_serial(int baud)
 
        /* disable pullups for GPIO 14 & 15 */
        gpio_pullups(0xc000, 0, PUD_DISABLE);
+       /* select alt0 function for GPIO 14 & 15 */
+       gpio_fsel(14, FSEL_ALT0);
+       gpio_fsel(15, FSEL_ALT0);
 
-       REG_ICR = 0;    /* clear pending interrupts */
+       REG_ICR = 0x7ff;        /* clear pending interrupts */
 
        /* calculate baud rate divisor */
        bdiv_fp6 = (UART_CLK << 6) / (16 * baud);
-       REG_IBRD = (bdiv_fp6 >> 6) & 0xffff;    /* 16 bits integer part */
-       REG_FBRD = bdiv_fp6 & 0x3f;             /* 6 bits fractional precision */
+       REG_IBRD = 1;//(bdiv_fp6 >> 6) & 0xffff;        /* 16 bits integer part */
+       REG_FBRD = 40;//bdiv_fp6 & 0x3f;                /* 6 bits fractional precision */
 
        /* line control: fifo enable, 8n1 */
        REG_LCRH = LCRH_FIFOEN | LCRH_8BITS;